The AB2250B1057 from Anatech Electronics is a Band Pass Filter with Frequency 2.2 to 2.3 GHz, Bandwidth 100 MHz, Center Frequency 2250 MHz, Insertion Loss 0.8 dB, Upper Rejection 95dB@2400-4000MHz. Tags: Module with Connectors, Cavity Filter. More details for AB2250B1057 can be seen below.